Closed-loop direct ink extruder system with multi-part materials mixing

The field of additive manufacturing has expanded from single material-based 3D printing to multimaterial printed complex smart structures with intrinsic sensing capability. However, current printers allow one material at a time, limited ability mixing multiple materials. Herein, we present the new printer which eliminates above shortcoming by merging Fused Filament Fabrication and Direct Ink Write in compact system. developed expands range materials that can be allows multi-part cost effective parts increases window such as two-part rubbers. experiments performed using various show having good control even high speeds (up 20 mm/s). performance was evaluated extensively varying different parameters nozzle diameter, pressure speed. Finally, capability is demonstrated autonomous structures.